Maths · Coordinates of a point in space, the distance between two points, section formula
If the surface area of a sphere is Find its diameter.
If the surface area of a sphere is \( 9856 c m^{2} . \) Find its diameter.
- A. 28
- B. 55
- C. 56 \)
- D. 30
Step-by-step solution
Given surface area of sphere = 9856 cm². Formula: 4πr² = 9856. Using π = 22/7, 4*(22/7)*r² = 9856 => (88/7)*r² = 9856 => r² = 9856 * 7/88 = 9856/88 * 7 = 112 * 7 = 784 => r = √784 = 28 cm. Diameter = 2r = 56 cm.
Related MCQs
- Perimeter of triangle whose vertices are (0,4,0),(3,4,0) and , \) is…
- How many cubes each of surface area can be made out of a cube of edge measure…
- Statement-1: The point \) is the mirror image of the point \) in the plane Statement-2: The plane bisects the line segment joining \) and \)…
- If and are co-ordinates of the points of trisection of the segment joining the points , \boldsymbol{B}(-\mathbf{1}, \mathbf{3}, \mathbf{6}) …
- In geometry, we take a point, a line and a plane as undefined terms.…